No problem, we've got 2187 and 5251 to multiply
2187 × 5251 = 5251 × (2187)
+ 5251 × 7 giving us 36757
+ 5251 × 80 that is equal 420080
+ 5251 × 100 which equals 525100
+ 5251 × 2000 giving us 10502000

= 11483937
